Solved: A diffuse surface having the following spectral
Chapter , Problem 12.71(choose chapter or problem)
A diffuse surface having the following spectral characteristics is maintained at 500 K when situated in a large furnace enclosure whose walls are maintained at 1500 K: (a) Sketch the spectral distribution of the surface emissive power E and the emissive power E,b that the surface would have if it were a blackbody. (b) Neglecting convection effects, what is the net heat flux to the surface for the prescribed conditions? (c) Plot the net heat flux as a function of the surface temperature for 500 T 1000 K. On the same coordinates, plot the heat flux for a diffuse, gray surface with total emissivities of 0.4 and 0.8. (d) For the prescribed spectral distribution of , how do the total emissivity and absorptivity of the surface vary with temperature in the range 500 T 1000 K? 0
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